Penciclovir topical is in the FDA pregnancy category B. This means that it is unlikely to harm an unborn baby. Do not use penciclovir topical during pregnancy without first talking to your doctor.
It is not known whether penciclovir topical passes into breast milk.
Use penciclovir topical exactly as directed by your doctor. If you do not understand these directions, ask your doctor, nurse, or pharmacist to explain them to you.
Penciclovir topical should be applied to cold sore lesions every 2 hours while awake for a period of four days, unless otherwise directed by your doctor.
Penciclovir topical should be used to treat cold sores on the lips and face only.
For best results, treatment with penciclovir topical should begin as soon as possible after symptoms appear.
Do not apply penciclovir topical to the inside of the nose or in or near the eyes, as it may cause irritation.
Store penciclovir topical at room temperature away from moisture and heat.
Use the missed dose as soon as you remember. However, if it is almost time for your next dose, skip the dose you missed and use only your next regularly scheduled dose.
Serious side effects have not been reported with the use of penciclovir topical.
Other less serious side effects may be more likely to occur. Continue to use penciclovir topical and talk to your doctor if you experience:
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headache;
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local numbness or tingling where the cream is applied;
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changes in taste;
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rash; or
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irritation at the application site.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
Do not apply penciclovir topical to the inside of the nose or in or near the eyes, as it may cause irritation.
For best results, treatment with penciclovir topical should begin as soon as possible after symptoms appear.
There are no restrictions on food, beverages, or activity during treatment with penciclovir topical, unless otherwise directed by your doctor.
Do not use other topical medications to treat the same area at them same time as penciclovir topical, unless otherwise directed by your doctor.
No other medicines have been reported to interact with penciclovir topical. Talk to your doctor or pharmacist before taking other prescription or over-the-counter medications during treatment with penciclovir topical.
An overdose of penciclovir topical is unlikely to threaten life. If an excessive amount of the cream has been used, or if the cream has been ingested, contact a poison control center or an emergency room for advice.
